Stovepipe-joint.



No 873.659. PATENTED DBO. 10,.190'7.

H. .S. BLOOD. ."STOVBPIPE JOINT.

APPLICATION FILED JAN- 24, 1907.

' IINVENTOR ATTORNEYS iSpecification oi Letters Patent.

Patented 19,1336'K Aptlicatiun filed January 24.1907. Serial to. 363.807.

bead forming the groove B and slsooro- Viillllg a flap (J Wnicn may be'o'peneo. as

shown in Fig. i for the introduction. of a key Bottinecu, in the county of Bottinesu and antl then closcii as shown f2 and 4- 'to 35 State of North De have invented cercovet-the opening. j

tsin new end useful i grovcinents in Stove in 0 creation thepine sections may he tale ipe-Joints, of which the following is c. speciscope together as shown in Fig. it end the icstion. Y flap C being opened the key D may he intro- My invention is an improvement in stove duced and resseol around to extend Within so pipes and similar pipes, Emil in the particu ar the s ire-l c isinnel secured the grooves 1%? construction for connecting the meeting ends and t the channel being preferably of a of the adjoining sections; and the invention cross-sectionsi size slightly in excess of the consists in certain novel constructions and diameter of the key D so that after the listcombinctions of parts as will be hereinafter is introduced to lock the sections A and B cs described and cleirnedi In the drawing Figure l is a side elevstion of a pipe joint befoite being tightened, the fisp covering the opening for the introduc tion of the key being slightly raised. Fig. 2

- is asimilar iew of the joint after itis closed and the lie-p Dressed clown to cover the openmg. Figs. 0 and 4- are detail side views the pipe sections detached. Fig. 5 is e vs".-

together the sections may he turned rota rily relatively to each other to the position shown in Fig. 2, thus tightening the sections by it screw action, as will be readily understood on reference to the drawing.

The key is preferably an per ort he like not easily corroded. erence the owning for the insertion key is locatet at the uppcrencl of s tic-cl longitudinal section of t. e pipe goint. li hct i claim is J5 In the construction shownthe seC- 1. A "pipe i int comprising two telcscoped tions A and B telescope their meeting the inner one living in its onter ends, the section 3 iii one end U781 time s I zoove iillfi the cute? one having the adjoining end of section and the secin inner iuce a spiral groove ccincidiz tion A is prod leti shorts: nce from its ith that in the inner 11 and on opening 3c extremity a. will en nnuleihecrl c wl'iicli leading to the groove in 1c outer section forms a, stop to limit the movement and a key extending within the spiral chem section A into the section B ill be undernel formed by the grooves in the innext and stood from T 1, 2 and 5 of the (ironing. outer sections whereby the sections may be I The section A is provided. near its extrenifitted longitudinally together, the Key intro- $5 ity with a groove A which extends in {L spiral duced and the sections then screwed together direction around the pipe section and the a tighten the joint, substantially as 'set section B has its end which iits over the 8111i for Y of the section 1.; provided with s spirei A pipe joint composed of sections tclegroove L of any desired length, the groove scoped at their meeting ends, one of said secso 10 in the section A being formed in the outer tioiis being rovitled with it stop to limit the face of the pi .i in the section extent to w 'ch the sections may telescope B being- Qorn; t inner and h and the telescopetl. portions of the said inner .sciri grooves be forcibly secured o a doctor sections being provided with coioheading the pipe sec 102155 in s manner Well Cit 11g spiral grooves opening toward each understood by thos skilled in the art. it other and forming a channel, and :1V key in will be notice-(l that these grooves when the said channel, substantially as set Forth. pipe sections s re tog et lic ij, as snov l HENRY S BLOOD 1n dig. 1 COlliCiiiG, DOLi emenuing spirally around their respective sections and an open Witnesses: 50 ing (J is provided leading ino the groove B SOLON U. Ii'stion, said opening being scoured by slitting the PERRY B. TURPIN. 

